Depending on the type and purpose of the pump, specific materials for mechanical seals are selected.
- Irrigation pumps driven by PTO
- Pumps for land reclamation and irrigation
- Pumps for mineral fertilizers (UAN)
- Pumps for fish farming
- Pumps and mixers for biogas, livestock farming, industry
- Lagoon mixer pumps
Let us consider the main types of liquids and the corresponding materials used in agricultural pumps.
| Type of liquid | Temperature °C | Preferred seal type | Rotating ring | Stationary ring | Secondary seal (rubber elements) |
| Drinking water, technical water | <100 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | SS304, SS316 | CAR | EPDM |
| Water with sand | <90 | R-MG1, R-2100, R-BT-AR, R-6B, R-6C, etc. | SIC | SIC | EPDM |
| Steam | <180 | R-BT-FN, R-BT-FN.NU, R-H12N, R-H75, etc. | CAR | SIC | EPDM |
| Wastewater pH>6<10 | <50 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | SIC | SIC | NBR |
| Wastewater pH>3<10 | <50 | R-MG1, R-2100, R-BT-AR, R-T1 / R-FBC, R-T2 / R-FBD, etc. | SIC (TC) | SIC (TC) | VITON |
| Manure | <60 | R-MG1, R-2100, R-BT-AR, R-T1 / R-FBC, R-T2 / R-FBD, etc. | SIC | SIC | NBR |
| Urea–ammonium nitrate solution (UAN) | <100 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | SIC | SIC | EPDM |
| Ammonium nitrate | <60 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | CER | CAR | EPDM |
| Potassium nitrate | <60 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | CER | CAR | NBR |
| Milk | <40 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | SS304, SS316 | CAR | VITON |
| Fruit juice | <60 | R-BT-RN, R-M3N, R-BT-FN, R-BT-FN.NU, R-M7N, etc. | SS304, SS316 | CAR | VITON |
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